I would like to have importlib just work out of the box for all VMs in 3.3 instead of requiring a minor patch in order to not throw an exception when loading from source and there is no bytecode. The relevant code for this discussion can be seen at http://hg.python.org/cpython/file/c2910971eb86/Lib/importlib/_bootstrap.py#l691 .
First question is what are all the VMs doing for imp.cache_from_source()? Are you implementing it like CPython, or are you returning None? And if you implemented it, what does marshal.loads() do? Right now cache_from_source() is implemented in importlib itself, but we can either provide a flag to control what it does or in your setup code for import you can override the function with ``lambda _, __=None: None``. Second question, what do you set sys.dont_write_bytecode to? The answers to those questions will dictate if there is anything to actually discuss. =)
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